CN102776123B - Waste continuous solid fermenting reacting device and solid fermenting method - Google Patents
Waste continuous solid fermenting reacting device and solid fermenting method Download PDFInfo
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- CN102776123B CN102776123B CN201210244163.5A CN201210244163A CN102776123B CN 102776123 B CN102776123 B CN 102776123B CN 201210244163 A CN201210244163 A CN 201210244163A CN 102776123 B CN102776123 B CN 102776123B
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/16—Solid state fermenters, e.g. for koji production
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/34—Internal compartments or partitions
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/18—Flow directing inserts
- C12M27/20—Baffles; Ribs; Ribbons; Auger vanes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention relates to the field of waste treatment and utilization, in particular to a waste continuous solid fermenting reacting device and a solid fermenting method. The waste continuous solid fermenting reacting device comprises a mixing tank (4) and a fermenting tank (5) below the mixing tank (4), wherein a strain inlet (6) and a material inlet (10) are arranged at the upper part of the mixing tank (4); a plurality of baffles (1) positioned below the strain inlet (6) and the material inlet (10) are arranged in the mixing tank (4); and the baffles (1) are staggered and inclined from two sides to the underside, and are all extended out of a centre line. According to the waste continuous solid fermenting reacting device and the solid fermenting method, uniform inoculating is achieved with the baffles and a flow dividing device; and a separating plate is adopted to enhance the transfer of the heat and the mass, so that the fermenting tank is uniformly divided into a plurality of small reacting spaces, and as a result, the substrates can be uniformly fermented, and the fermenting speed is increased; enhancing the waste solid fermenting reacting process is beneficial to expanding the solid fermenting as well as the production application.
Description
Technical field
The present invention relates to offal treatment and utilize field, particularly, the present invention relates to a kind of waste continuous solid-state fermentation reaction unit and process for solid state fermentation.
Background technology
China is one of the heaviest country of rubbish burden in the world.At present, dumping total amount in National urban is up to 7,000,000,000 tons, and generation is every year with approximately 8.98% speed increase.In more than 600 big and medium-sized cities, the whole nation, have 70% to be surrounded by rubbish.China is 1.5 hundred million tons nearby of the annual production of " municipal wastes " only, and these municipal wastes overwhelming majority are air storages.Rubbish, in corruption process, produces a large amount of heat energy, is mainly the obnoxious flavoures such as ammonia, methane and hydrogen sulfide, and excessive concentration forms stench, severe contamination atmosphere, and distribute heat, from aerial encirclement city.Due to heap garbage fermentation, produce methane gas, can there is spontaneous combustion, self-destruction phenomenon in rubbish.It not only affects urban look, has polluted atmosphere, water and soil simultaneously, and town dweller's health is constituted a threat to, and rubbish has become the thorny problem in urban development.Rubbish not only causes public hazards, especially the huge waste of resource." renewable resources " being dropped is worth up to 25,000,000,000 yuan in the annual municipal wastes of producing 1.5 hundred million tons per year! Beijing now produces 13000 tons, rubbish daily, 4,950,000 tons of whole year productions, and also annual by the speed increase with 8%.The method that China at present processes domestic refuse, except air storage, also has sanitary landfill, the problem that this method has avoided air storage to produce, and its shortcoming is that to build landfill yard floor space large; Duration of service is relatively short, is about 10 years; Cost is high, the wasting of resources of recoverable in rubbish.Be to burn again, make garbage bulk dwindle 50%～95% although burn, also burnt callable resource, discharge toxic gas simultaneously, as Dioxins, sulfur-nitrogen compound etc., and produce poisonous and harmful slag and dust.The 4th kind is compost, and this method needs people that organic waste and other rubbish are separated, and it has good development prospect.Current a large amount of non-classified is with regard to landfill or burn away the refuse, and is the huge waste to resource, can produce again secondary pollution.
Industrial fiber matter large, the concentrated feature of the poor slag amount of having of fermenting, these poor slag rich cellulose, are concentrated resources.1,500 ten thousand tons of China's distillers ' grains output in 2008,8,000,000 tons of vinegar grains, but these poor slags present acidity or alkalescence, are serious environomental pollution sources.
The solid-state fermentative processing process of waste can operate under normal temperature, normal pressure, produce available biogas, make full use of the useful components such as Mierocrystalline cellulose, xylogen, albumen and carbohydrate in waste, greatly reduce the volume of waste, with couplings such as chemical industry thermal treatment, landfill, burning electricity generations, realize waste ' s reclamation and improvement.
Solid ferment process, according to substratum and treating processes, can be divided into static fermentation and dynamic fermentation.The defects such as wherein static fermenting process exists heat and mass transfer performance poor, and fermenting process is inhomogeneous; And dynamic fermentation still exists complex structure, and there is the problems such as dead angle in sterilizing, cleaning.Solid-state fermentation reactor is divided into: rotary drum, tub formula, add a cover disc type, vertically cultivate boxlike, tilt inoculation boxlike, tray formula, conveyor type, column type and hybrid etc.Produce now solid-state fermentation reactor used or the device of traditional tray formula and thick layer ventilation laminar, larger is the continuous shallow tray fermentation of tunnel furnace, be static types, such solid-state fermentation reactor exists mass transfer, heat transfer property poor, the defect such as ferment inhomogeneous.The developing direction of solid-state fermentation reactor is to utilize the transport of chemical industry, the heat transfer in forced fermentation process and mass transfer, and therefore, dynamic fermentation is the developing direction of solid state fermentation.But, report that maximum dynamic fermentation reactors---rotating drum type reactor can not be realized operate continuously, limit its industrial application.The airtight dynamic fermentation reactor of other types, all in the laboratory study stage, can not be applied to actual production.
Adopt solid state fermentation to process waste and can make full use of useful component wherein, realize the object of waste ' s reclamation and decrement discharge, but traditional solid ferment process and the exploitation of fermentation reactor are in obtaining marked improvement, the problems such as solid ferment process trivial operations, labor capacity are large are still that restriction solid state fermentation amplifies and the key of commercial application, major cause is: solid ferment process periodical operation, handling labor intensity is large.If can realize continuously feeding and discharging in fermenting process, can greatly improve the efficiency (CN200610114377.5 of fermentation; CN201110034380.7; CN201110034320.5).After existing continuous solid-state fermentation reaction unit exists and amplifies and produce, fermentation substrate mixes inhomogeneous with bacterial classification, and fermentation substrate is the problem such as skewness in fermentor tank, has seriously reduced fermentation production efficiency.In addition, it is integrated that solid ferment process lacks technique, in the solid-state fermenting process of waste, still has a lot of fermentation residues, need to further process, and therefore exploitation biology, chemical industry coupling technique can significantly reduce solid ferment process process cost.
Summary of the invention
The object of the invention is to, for address the above problem provide a kind of system controllability and measurability strong, can operate continuously, can be by traverse baffle enhancement of heat transfer by microbial catalyst and waste mixed uniformly waste continuous solid-state fermentation reaction unit and process for solid state fermentation.
Waste continuous solid-state fermentation reaction unit of the present invention, comprises that the fermentor tank 5 of mixing tank 4 and below thereof, the top of described mixing tank 4 are provided with bacterial classification entrance 6 and feeding mouth 10; Described mixing tank 4 inside are positioned at bacterial classification entrance 6 and are provided with some traverse baffles 1 with feeding mouth 10 belows, and described traverse baffle 1 is staggered inclination downwards from both sides, and all extends through medullary ray;
Between described mixing tank 4 and fermentor tank 5, there is a transition part, in this transition part, be provided with splitter 2;
Described fermentor tank 5 inside, reaction zone are provided with some equally distributed space bars 3 vertically, and fermentor tank 5 central reaction zones are divided into some equal-volumes region.
According to waste continuous solid-state fermentation reaction unit of the present invention, described mixing tank 4, shape preferably but be not limited to right cylinder or rectangular parallelepiped, described fermentor tank 5, shape preferably but be not limited to right cylinder or rectangular parallelepiped.The array mode of the two is also not limited to right cylinder and right cylinder combination or rectangular parallelepiped and rectangular parallelepiped combination.
The present invention's traverse baffle used is stainless material, with the angle of mixing tank wall be 30 ° ~ 70 °, its object increases waste and bacterial classification mixing probability exactly, promote waste evenly inoculate, on the other hand, also guarantee that the waste of inoculating enters on splitter smoothly.
The present invention's splitter used adopts stainless material, and principal feature is exactly each interval that the waste of evenly inoculation is evenly distributed to retort.
The present invention interval used adopts stainless material, and principal feature is exactly that retort is divided into different regions, guarantees that reaction process is conducted heat, mass transfer is even, and its height is consistent with retort height.
According to waste continuous solid-state fermentation reaction unit of the present invention, described space bar 3 is identical with fermentor tank 5 central reaction zone height.
According to waste continuous solid-state fermentation reaction unit of the present invention, described fermentor tank 5 bottoms are provided with valve 8 for discharging filtrate, fermentor tank 5 bottom sides openings connect discharge pipe 12, described discharge pipe 12 one end are provided with the solid product outlet 9 that Open Side Down, and solid product exports 9 sidewall openings and communicates with the feeding mouth 10 of mixing tank 4 by pan feeding pipeline 7.
Based on a process for solid state fermentation for above-mentioned waste continuous solid-state fermentation reaction unit, comprise the following steps:
1) waste is added in mixing tank by feeding mouth through pan feeding pipeline, microbial catalyst is added in mixing tank by bacterial classification entrance simultaneously, waste mixes via traverse baffle even action with microbial catalyst;
2) waste mixing and microorganism catalysis agent composition are evenly joined to fermentor tank central reaction zone through splitter, waste and microorganism catalysis agent composition are spaced apart plate and are divided into some equal portions in fermentor tank, and in fermentor tank, evenly anaerobically fermenting is produced biogas;
3) a part of fermentation solid product is returned to mixing tank via discharge pipe and pan feeding pipeline, another part fermentation solid product is discharged by solid product outlet.
According to process for solid state fermentation of the present invention, the filtrate after fermentation is returned to mixing tank through bacterial classification entrance.
According to process for solid state fermentation of the present invention, described waste is one or more in cellulose fermentation grain slag, domestic waste, changing food waste or agricultural wastes.
According to process for solid state fermentation of the present invention, preferably, the anaerobism methanogen flora that described microbial catalyst bacterial classification is enrichment, cell concn is 1～50g stem cell/L.Described anaerobism methanogen flora is exactly to be converted into the microorganism species of methane as municipal wastes, garden garbage etc. saying under oxygen free condition of the screening such as anaerobic sludge, sewage sludge enrichment is organic.
According to process for solid state fermentation of the present invention, described microbial catalyst quality is 2%～20% of waste quality.
According to process for solid state fermentation of the present invention, the temperature of described anaerobically fermenting is 30～50 ℃, and fermentation time is 5～30 days, and fermentation pressure is normal pressure～2Mpa.
According to process for solid state fermentation of the present invention, wherein, return to mixing tank fermentation solid product and account for 5%～30% of total fermentation solid product, because containing fermentative microflora in tunning, so being returned to mixing pit, part tunning not only can improve waste utilization rate, and can improve solid state fermentation efficiency, shorten the microbiological treatment time.
When the present invention realizes evenly inoculation by traverse baffle, splitter, strengthen the transmission of heat, quality by space bar, fermentor tank is evenly divided into some little reaction compartments, substrate is evenly fermented, accelerate fermenting speed, strengthened the solid-state fermentation reaction process of waste, realized solid-state fermentation process and the reactor of operate continuously and process integration, solve solid state fermentation trivial operations, tedious problem, be conducive to amplification and the production application of solid state fermentation.
Particularly, the present invention has the following advantages:
1. without solid waste turning device, reach heat and mass transfer by traverse baffle, space bar, reach the object of mixing microorganisms catalyzer and solid waste.
2. apparatus structure is simple, is easy to sealing, is easy to industry and amplifies.
3. be connected with mixing tank by course of conveying, realize the continuous operation of solid ferment process.
4. by fermentation process, make full use of useful component wherein, realize the high-valued classification utilization of waste, reduce the volume of waste.
5. by combining with chemical processes such as thermal treatment, landfill or burning electricity generations, realize waste harmless treatment.
Accompanying drawing explanation
Fig. 1 waste continuous solid-state fermentation of the present invention reaction unit structural representation (mixing tank and fermentor tank central reaction zone are right cylinder).
Sectional elevation is overlooked in the fermentor tank reaction zone of Fig. 2 waste continuous solid-state fermentation of the present invention reaction unit.
Fig. 3 waste continuous solid-state fermentation of the present invention reaction unit structural representation (two fermentor tanks bottom).
Fig. 4 waste continuous solid-state fermentation of the present invention reaction unit structural representation (mixing tank and fermentor tank central reaction zone are positive rectangular parallelepiped).
Accompanying drawing mark
1, traverse baffle 2, separator 3, space bar 4, mixing tank
5, fermentor tank 6, bacterial classification entrance 7, pan feeding pipeline 8, valve
9, solid product outlet 10, feeding mouth 11, pneumatic outlet 12, discharge pipe
Embodiment
Below in conjunction with drawings and the specific embodiments, waste continuous solid-state fermentation reaction unit of the present invention and process for solid state fermentation are described further.
As Figure 1-4, waste is added in mixing tank 4 by feeding mouth 10 through pan feeding pipeline 7, microbial catalyst is added in mixing tank 4 by bacterial classification entrance 6 simultaneously, waste mixes via traverse baffle 1 even action with microbial catalyst.The waste mixing and microorganism catalysis agent composition are evenly joined to fermentor tank 5 central reaction zones through splitter 2, waste and microorganism catalysis agent composition are spaced apart plate 3 and are divided into some equal portions (Fig. 2) in fermentor tank 5, produce biogas at the interior even anaerobically fermenting of fermentor tank 5, the temperature of anaerobically fermenting is 30～50 ℃, fermentation time is 5～30 days, and fermentation pressure is normal pressure～2Mpa.The biogas that produces is discharged through pneumatic outlet 11.5%～30% fermentation solid product is returned to mixing tank via discharge pipe 12 and pan feeding pipeline 7, and all the other fermentation solid products are discharged by solid product outlet 9.Fermentation is produced to filtrate and reclaim through valve 8, return to mixing tank by bacterial classification entrance 6.
As shown in Figure 1, according to waste continuous solid-state fermentation reaction unit of the present invention, for Chinese style mini-reactor, preferably, the central reaction zone of described mixing tank 4 and fermentor tank 5 is right cylinder; Described transition part is truncated cone-shaped, and described splitter 2 is cone, and its top is positioned at mixing tank 4 bottoms; The bottom of described fermentor tank 5 is inverted cone structure, and its inside, central reaction zone is provided with some equally distributed space bars 3 of aplysia punctata that are vertically.This optimal technical scheme, under the condition reducing, is divided into distinct portions in reactor for treatment amount portion, promotes the transmission of heat and material, realizes evenly fermentation, improves fermentation efficiency.
As shown in Figure 3, according to waste continuous solid-state fermentation reaction unit of the present invention, for the packaged unit such as Chinese style, demonstration, preferably, described mixing tank 4 is right cylinder; Described fermentor tank 5 tops are the rectangular stage body in bottom surface, central reaction zone is rectangular parallelepiped, bottom is two inverted cone structures in parallel, shares same valve and discharge pipe, and its inside, central reaction zone is arranged with some equally distributed space bars 3 vertically in parallel.This optimal technical scheme, under the condition reducing, is divided into distinct portions in reactor for treatment amount portion, promotes the transmission of heat and material, realizes evenly fermentation, improves fermentation efficiency, adopts 2 product outlets to be easy to tunning to discharge.
As shown in Figure 4, according to waste continuous solid-state fermentation reaction unit of the present invention, for industrialization large-scale plant, preferably, the central reaction zone of described mixing tank 4 and fermentor tank 5 is rectangular parallelepiped; Described transition part is positive frustum; The bottom of described fermentor tank 5 is positive frustum structure, and its inside, central reaction zone is arranged with some equally distributed space bars 3 vertically in parallel.This optimal technical scheme, under the condition reducing, is divided into distinct portions in reactor for treatment amount portion, promotes the transmission of heat and material, realizes evenly fermentation, improves fermentation efficiency, adopts square reactor to be easy to industry and amplifies.Described transition part shunting device 2 belows are provided with some baffle plates that are connected with space bar 3.
Above-mentioned waste is one or more in cellulose fermentation grain slag, domestic waste, changing food waste or agricultural wastes.
The bacterial classification of mentioned microorganism catalyzer is the active anaerobic sludge microorganism of enrichment, and cell concn is 1～50g stem cell/L.
Mentioned microorganism catalyzer is 2%～20% of waste quality.
The cultivation of embodiment 1 microbial catalyst
Microbial catalyst bacterial classification is the anaerobism methanogen flora of enrichment, 37 ℃ of culture temperature, and culture environment is anaerobism, incubation time is 25 days.
Cultivating required culture medium prescription is (g/L): K
2hPO
40.4, KH
2pO
40.4, NH
4cl1.0, MgCl
21.0, yeast extractive substance l.0, halfcystine 0.5.0.1% resazurin 2.0mL, trace element solution 10.0mL, vitamin solution 10.0mL.
Above-mentioned trace element solution consist of (g/L): MgSO
47H
2o3.0, CoCl
20.1, MnSO
42H
2o05, CaC1
22H
2o0.1, ZnSO
47H
2o0.1, NaCl1.0, FeSO
47H
2o0.1, CuSO
45H
2o0.01, KAl (SO
4)
20.01, H
3bO
30.01, NaMoO
42H
2o0.01.
The consisting of of said vitamin solution (mg/L): VitB1 (B
l) 5.0, calcium pantothenate 5.0, riboflavin (B
2) 5.0, vitamin H 2.0, folic acid 2.0, Bl:0.1, nicotinic acid 5.0, para-amino benzoic acid 5.0, Thioctic Acid 5.0.
Trace element solution and vitamin solution prepare rear use 0.22 μ m micropore filtering film filtration sterilization, put into 4 ℃ of refrigerators stand-by.
First by the rubbish from cooking extruding of collecting, remove most of moisture wherein, by the microbial catalyst of cultivating in above-described embodiment 1, by supercentrifuge centrifugal concentrating, the microbial catalyst that by 0.1kg concentration is 25g stem cell/L fully mixes with the rubbish from cooking of 5kg extruding, in circular solid-state fermentation reactor, ferment, reactor is divided into 6 deciles by inner member, leavening temperature: 37 ℃, fermentation time 18 days, the pressure normal pressure of fermentation, separates tunning, produces 52.3 liters of biogas.
By the microbial catalyst of cultivating in above-described embodiment 1, by supercentrifuge centrifugal concentrating, for subsequent use.Certain speed is installed and enters solid-state fermentation reactor, mix by traverse baffle with the microbial strains of given pace, the concentration of microbial catalyst is 1g stem cell/L, quality is 2kg, the amount of distillers ' grains is 10kg, in square solid-state fermentation reactor, ferment, square reactor is partitioned into 8 deciles by inner member, leavening temperature: 37 ℃, fermentation time 30 days, the pressure normal pressure of fermentation, tunning is separated, collect gas volume 150L, finally obtaining tunning quality is 3kg, realizes volume and reduces.
Embodiment 4 rubbishes from cooking and domestic waste mixed solid fermentation
First by the rubbish from cooking extruding of collecting, remove most of moisture wherein, in mixing pit, the rubbish from cooking of extruding and domestic waste are mixed according to the ratio of 1:1; By the microbial catalyst of cultivating in above-described embodiment 1, by supercentrifuge centrifugal concentrating, the microbial catalyst that by 2kg concentration is 25g stem cell/L mixes by traverse baffle with domestic garbage mixing thing with the rubbish from cooking of 10kg extruding, in solid-state fermentation reactor, ferment, leavening temperature: 30 ℃, fermentation time 20 days, the pressure normal pressure of fermentation, tunning is separated, collect fermentation gas, after fermentation ends, a part of product circulation is returned to the bacterial classification of mixing pit as fermentation, another part landfill.
First by the domestic waste classification of collecting, remove metallics, plastics and stone etc. wherein, in mixing pit, fresh vinasse and domestic waste are mixed according to the ratio of 1:2; By the microbial catalyst of cultivating in above-described embodiment 1, by supercentrifuge centrifugal concentrating, be that the waste that the microbial catalyst of 25g stem cell/L mixes with 9kg mixes by traverse baffle by 0.18kg concentration, in solid-state fermentation reactor, ferment, leavening temperature: 37 ℃, fermentation time 15 days, the pressure 2Mpa of fermentation, separates tunning, collect fermentation gas, after fermentation ends, a part of product circulation is returned to the bacterial classification of mixing pit as fermentation, another part landfill disposal.
Claims (13)
1. a waste continuous solid-state fermentation reaction unit, comprises and it is characterized in that the fermentor tank (5) of mixing tank (4) and below thereof, the top of described mixing tank (4) is provided with bacterial classification entrance (6) and feeding mouth (10); Described mixing tank (4) inside is positioned at bacterial classification entrance (6) and is provided with some traverse baffles (1) with feeding mouth (10) below, and described traverse baffle (1) is staggered inclination downwards from both sides, and all extends through medullary ray;
Between described mixing tank (4) and fermentor tank (5), there is a transition part, in this transition part, be provided with splitter (2);
Described fermentor tank (5) inside, reaction zone is provided with some equally distributed space bars (3) vertically, and fermentor tank (5) central reaction zone is divided into some equal-volumes region.
2. waste continuous solid-state fermentation reaction unit according to claim 1, is characterized in that, described mixing tank (4) is right cylinder or rectangular parallelepiped.
3. waste continuous solid-state fermentation reaction unit according to claim 1, is characterized in that, described fermentor tank (5) is right cylinder or rectangular parallelepiped.
4. waste continuous solid-state fermentation reaction unit according to claim 1, is characterized in that, described space bar (3) is identical with fermentor tank (5) central reaction zone height.
5. waste continuous solid-state fermentation reaction unit according to claim 1, it is characterized in that, described fermentor tank (5) bottom is provided with valve (8) for discharging filtrate, fermentor tank (5) bottom sides opening connects discharge pipe (12), described discharge pipe (12) one end is provided with the solid product outlet (9) that Open Side Down, and solid product outlet (9) sidewall opening communicates with the feeding mouth (10) of mixing tank (4) by pan feeding pipeline (7).
6. the process for solid state fermentation based on waste continuous solid-state fermentation reaction unit described in claim 1, comprises the following steps:
1) waste is added in mixing tank by feeding mouth through pan feeding pipeline, microbial catalyst is added in mixing tank by bacterial classification entrance simultaneously, waste mixes via traverse baffle even action with microbial catalyst;
2) waste mixing and microorganism catalysis agent composition are evenly joined to fermentor tank central reaction zone through splitter, waste and microorganism catalysis agent composition are spaced apart plate and are divided into some equal portions in fermentor tank, and in fermentor tank, evenly anaerobically fermenting is produced biogas;
3) a part of fermentation solid product after fermentation is returned to mixing tank via discharge pipe and pan feeding pipeline, another part fermentation solid product is discharged by solid product outlet.
7. process for solid state fermentation according to claim 6, is characterized in that, the filtrate after fermentation is returned to mixing tank through bacterial classification entrance.
8. process for solid state fermentation according to claim 6, is characterized in that, described waste is one or more in cellulose fermentation grain slag, domestic waste, changing food waste or agricultural wastes.
9. process for solid state fermentation according to claim 6, is characterized in that, described microbial catalyst is anaerobism methanogen flora.
10. process for solid state fermentation according to claim 6, is characterized in that, in described microbial catalyst, cell concn is 1～50g stem cell/L.
11. process for solid state fermentation according to claim 6, is characterized in that, described microbial catalyst quality is 2%～20% of waste quality.
12. process for solid state fermentation according to claim 6, is characterized in that, the temperature of described anaerobically fermenting is 30～50 ℃, and fermentation time is 5～30 days, and fermentation pressure is normal pressure～2Mpa.
13. process for solid state fermentation according to claim 6, is characterized in that, return to mixing tank fermentation solid product and account for 5%～30% of total fermentation solid product.
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| CN102220223A (en) * | 2011-03-25 | 2011-10-19 | 重庆良酩科技发展有限公司 | Solid-state fermentation material processing device |
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